Coordination compounds of coinage metals with vinylidenebis(diphenylphosphane) and its bisulfide and their reactivity towards nucleophiles

Article abstract of DOI:10.1002/cber.19971301026

Vinylidenebisfdiphenylphosphane) reacts with gold(I) or gold(III) compounds to give dinuclear {[{Au(C₆F5)]₂{(PPh₂)₂C= CH₂J] or Au(PPh₂C(=CH₂)Ph₂P)]₂(ClO4) ₂) or mononuclear complexes ([Au(C₆F5)₃{PPh₂C(=CH₂)Ph ₂PJ]}, respectively. The latter reacts with gold(I) or silver(I) compounds to afford dinuclear[Au(C₆Fs)₃|PPh₂C(=CH ₂)Ph₂P)AuX], X = Cl or C₆FS) or trinuclear species {[{Au(C₆Fs)₃{PPh₂C{=CH₂)Ph ₂Pl)₂M]ClO4, M = Au or AgJ. No addition of nucleophiles to the C=C double bond is observed in these complexes, which contain the diphosphane acting as bridging or monodentate ligand. (SPPri2)₂C= CH₂ reacts with AgCIO4 to give [Ag{SPPh₂C(=CH₂)Ph₂PS)]₂(C1O4) ₂ or [Ag{PPh₂C(=CH₂)Ph₂P)₂]ClO4. The crystal structure of [Au(C₆Fs)3{PPh₂C(=CH₂)Ph₂P)Au(C ₆Fs)] has been established by X-ray crystallography, and confirms the expected square planar and linear geometry for the Aum and Au1 centres, respectively. WILEY-VCH Verlag GmbH,.